CaratHunter
Plans
Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1525780219

Certificate GIA 1525780219

Diamond specifications and retailer prices

From $5,003 SGD
$3,912 USD
As of November 2, 2026
Save $6,166 SGD (55%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $11,169 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1525780219. Listed at 29 retailers as of October 30, 2026, with prices from $5,003 to $11,169, a $6,166 spread on the same certified stone. NZ Jewellers lists it at $11,169. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.97°
Pavilion angle31.5°
OriginNatural
Grading LabGIA
CertificateGIA 1525780219
Dimensions7.21 × 5.69 × 3.91 mm
L/W Ratio1.27
Girdle conditionVery Thick
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.21 mm5.69 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1525780219
Side View
Table 66.0%Crown 44.97°Girdle: THK-VTHPavilion 31.5°Culet: NoneDepth 68.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $11,169 SGD|Low: $4,325 SGD|High: $11,169 SGD|Avg: $6,527 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
November 2, 2026
Retailer 11$5,003 SGD
Retailer 8$5,008 SGD
Retailer 22$5,061 SGD
Retailer 7$5,064 SGD
Retailer 12$5,124 SGD
Retailer 10$5,361 SGD
Retailer 24$5,493 SGD
Retailer 9$5,770 SGD
Retailer 16$5,791 SGD
Retailer 6$5,807 SGD
Retailer 14$5,807 SGD
Retailer 23$5,807 SGD
Retailer 25$5,905 SGD
Retailer 15$6,222 SGD
Retailer 13$6,375 SGD
Retailer 5$6,522 SGD
Retailer 26$6,522 SGD
Retailer 17$6,615 SGD
Retailer 18$6,628 SGD
Retailer 4$6,701 SGD
Retailer 3$6,740 SGD
Retailer 2$6,840 SGD
Retailer 21$7,880 SGD
Retailer 19$9,279 SGD
Retailer 20$10,211 SGD
NZ Jewellers$11,169 SGD

40 data points across 26 retailers

29 retailers$5,003 SGD to $11,169 SGD

A
Cheapest Retailer
-
$5,003 SGD
$3,912 USD
A
Retailer 2
-
$5,008 SGD
$3,916 USD
View
A
Retailer 3
-
$5,061 SGD
$3,958 USD
View
A
Retailer 4
-
$5,064 SGD
$3,960 USD
View
A
Retailer 5
-
$5,124 SGD
$4,007 USD
View
A
Retailer 6
-
$5,297 SGD
A$6,372 AUD
View
A
Retailer 7
-
$5,361 SGD
$4,192 USD
View
Final sale: no returns
A
Retailer 8
-
$5,493 SGD
$4,295 USD
View
A
Retailer 9
-
$5,770 SGD
$4,512 USD
View
Retailer 10
-
$5,791 SGD
$4,528 USD
View
Price last confirmed 10 days ago
A
Retailer 11
-
$5,807 SGD
$4,541 USD
View
A
Retailer 12
-
$5,807 SGD
$4,541 USD
View
A
Retailer 13
-
$5,807 SGD
$4,541 USD
View
A
Retailer 14
-
$5,905 SGD
$4,617 USD
View
A
Retailer 15
-
$6,108 SGD
A$7,348 AUD
View
A
Retailer 16
-
$6,222 SGD
$4,865 USD
View
A
Retailer 17
-
$6,375 SGD
£3,925 GBP
View
A
Retailer 18
-
$6,522 SGD
$5,100 USD
View
A
Retailer 19
-
$6,522 SGD
$5,100 USD
View
A
Retailer 20
-
$6,615 SGD
$5,173 USD
View
Retailer 21
-
$6,628 SGD
A$7,973 AUD
View
Price last confirmed 23 days ago
A
Retailer 22
-
$6,701 SGD
$5,240 USD
View
A
Retailer 23
-
$6,740 SGD
$5,270 USD
View
A
Retailer 24
-
$6,840 SGD
€5,094 EUR
View
Retailer 25
-
$6,873 SGD
$5,374 USD
View
Price last confirmed 56 days ago
B+
Retailer 26
-
$7,880 SGD
ZAR 99,544 ZAR
View
B
Retailer 27
-
$9,279 SGD
$7,255 USD
View
B+
Retailer 28
-
$10,211 SGD
£6,287 GBP
View
Most Expensive
B
NZ Jewellers
cde40c29-89bd-459f-8487-001a75435224 · Oct 30
$11,169 SGD
$8,733 USD
View
28 more retailers have this diamond
Prices start from $5,003 SGDSave up to $6,166 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Radiant
$5,003 SGD