CaratHunter
Plans
Radiant|Natural|GIA

1.51ct F SI1 Radiant Natural Diamond

EX • F/SI1 • GIA 6545057025

Certificate GIA 6545057025

Diamond specifications and retailer prices

From $10,320 SGD
A$12,415 AUD
As of November 2, 2026
Save $8,069 SGD (44%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $18,389 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545057025. Listed at 20 retailers as of October 30, 2026, with prices from $10,320 to $18,389, a $8,069 spread on the same certified stone. NZ Jewellers lists it at $18,389. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.53°
Pavilion angle29.05°
OriginNatural
Grading LabGIA
CertificateGIA 6545057025
Dimensions5.53 × 8.15 × 3.60 mm
L/W Ratio1.47
Top View
5.53 mm8.15 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545057025
Side View
Table 66.0%Crown 43.53°Girdle: Very ThickPavilion 29.05°Culet: NoneDepth 65.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $18,389 SGD|Low: $10,114 SGD|High: $18,966 SGD|Avg: $12,923 SGD|-3.0%
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
November 2, 2026
Retailer 9$10,330 SGD
Retailer 19$10,960 SGD
Retailer 5$11,033 SGD
Retailer 15$11,033 SGD
Retailer 8$11,125 SGD
Retailer 6$11,953 SGD
Retailer 2$12,061 SGD
Retailer 13$12,117 SGD
Retailer 18$12,137 SGD
Retailer 3$12,261 SGD
Retailer 4$13,032 SGD
Retailer 17$13,032 SGD
Retailer 11$13,179 SGD
Retailer 14$13,391 SGD
Retailer 16$13,467 SGD
Retailer 7$13,792 SGD
Retailer 10$14,522 SGD
Retailer 12$17,231 SGD
NZ Jewellers$18,389 SGD

42 data points across 19 retailers

20 retailers$10,320 SGD to $18,389 SGD

B+
Cheapest Retailer
-
$10,320 SGD
A$12,415 AUD
B+
Retailer 2
-
$10,330 SGD
$8,077 USD
View
B+
Retailer 3
-
$10,960 SGD
$8,570 USD
View
B+
Retailer 4
-
$11,033 SGD
$8,627 USD
View
B+
Retailer 5
-
$11,033 SGD
$8,627 USD
View
Final sale: no returns
B+
Retailer 6
-
$11,125 SGD
$8,699 USD
View
B+
Retailer 7
-
$11,953 SGD
$9,346 USD
View
B+
Retailer 8
-
$12,061 SGD
£7,426 GBP
View
Retailer 9
-
$12,117 SGD
A$14,577 AUD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$12,137 SGD
$9,490 USD
View
B+
Retailer 11
-
$12,261 SGD
$9,587 USD
View
B
Retailer 12
-
$13,032 SGD
$10,190 USD
View
B
Retailer 13
-
$13,032 SGD
$10,190 USD
View
B
Retailer 14
-
$13,179 SGD
$10,305 USD
View
B
Retailer 15
-
$13,391 SGD
$10,470 USD
View
B
Retailer 16
-
$13,467 SGD
$10,530 USD
View
B
Retailer 17
-
$13,792 SGD
$10,784 USD
View
Retailer 18
-
$14,522 SGD
$11,355 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
$17,231 SGD
£10,609 GBP
View
Most Expensive
B
NZ Jewellers
1e0b6c26-ff93-4381-948b-98c0c0e75016 · Oct 30
$18,389 SGD
$14,379 USD
View
19 more retailers have this diamond
Prices start from $10,320 SGDSave up to $8,069 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.

B+
1.51ct Radiant
$10,320 SGD