CaratHunter
Plans
Radiant|Natural|GIA

1.51ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 1555665977

Certificate GIA 1555665977

Diamond specifications and retailer prices

From $5,938 SGD
$4,643 USD
As of November 1, 2026
Save $5,800 SGD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,738 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555665977. Listed at 15 retailers as of October 30, 2026, with prices from $5,938 to $11,738, a $5,800 spread on the same certified stone. NZ Jewellers lists it at $11,738. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.22°
OriginNatural
Grading LabGIA
CertificateGIA 1555665977
Dimensions7.78 × 5.83 × 3.99 mm
L/W Ratio1.33
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
7.78 mm5.83 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555665977
Side View
Table 68.0%Crown 43.22°Girdle: Slightly ThickPavilionCulet: NoneDepth 68.4%

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 1
Current: $11,738 SGD|Low: $5,752 SGD|High: $12,499 SGD|Avg: $7,916 SGD|-6.1%
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
November 2, 2026
Retailer 4$5,938 SGD
Retailer 14$6,121 SGD
Retailer 3$6,478 SGD
Retailer 2$6,799 SGD
Retailer 8$6,847 SGD
Retailer 5$7,017 SGD
Retailer 6$7,017 SGD
Retailer 12$7,017 SGD
Retailer 13$7,215 SGD
Retailer 11$7,342 SGD
Retailer 7$7,940 SGD
Retailer 10$8,098 SGD
Retailer 9$11,178 SGD
NZ Jewellers$11,738 SGD

26 data points across 14 retailers

15 retailers$5,938 SGD to $11,738 SGD

A
Cheapest Retailer
-
$5,938 SGD
$4,643 USD
A
Retailer 2
-
$6,121 SGD
$4,786 USD
View
A
Retailer 3
-
$6,478 SGD
$5,065 USD
View
Final sale: no returns
A
Retailer 4
-
$6,799 SGD
£4,186 GBP
View
A
Retailer 5
-
$6,847 SGD
£4,216 GBP
View
A
Retailer 6
-
$7,017 SGD
$5,487 USD
View
A
Retailer 7
-
$7,017 SGD
$5,487 USD
View
A
Retailer 8
-
$7,017 SGD
$5,487 USD
View
A
Retailer 9
-
$7,215 SGD
$5,641 USD
View
B+
Retailer 10
-
$7,342 SGD
$5,741 USD
View
B+
Retailer 11
-
$7,940 SGD
€5,913 EUR
View
B+
Retailer 12
-
$8,098 SGD
$6,332 USD
View
Retailer 13
-
$8,185 SGD
$6,400 USD
View
Price last confirmed 12 days ago
B
Retailer 14
-
$11,178 SGD
£6,882 GBP
View
Most Expensive
B
NZ Jewellers
4550dc16-0292-4ea4-b8e9-ba98c68b4e06 · Oct 30
$11,738 SGD
$9,178 USD
View
14 more retailers have this diamond
Prices start from $5,938 SGDSave up to $5,800 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
$5,938 SGD