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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2557586665

Certificate GIA 2557586665

Diamond specifications and retailer prices

From $6,725 SGD
HK$41,100 HKD
As of November 1, 2026
Save $8,544 SGD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $15,269 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round 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 and certified by GIA 2557586665. Listed at 17 retailers as of October 30, 2026, with prices from $6,725 to $15,269, a $8,544 spread on the same certified stone. NZ Jewellers lists it at $15,269. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2557586665
Dimensions7.25 × 7.31 × 4.56 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle
Top View
7.25 mm7.31 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557586665
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.7%

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: $15,269 SGD|Low: $6,620 SGD|High: $15,269 SGD|Avg: $9,444 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
November 1, 2026
Retailer 12$6,725 SGD
Retailer 16$6,756 SGD
Retailer 5$7,214 SGD
Retailer 7$7,633 SGD
Retailer 3$8,271 SGD
Retailer 6$8,271 SGD
Retailer 15$8,271 SGD
Retailer 11$8,697 SGD
Retailer 13$9,120 SGD
Retailer 8$9,192 SGD
Retailer 17$9,192 SGD
Retailer 14$9,499 SGD
Retailer 4$9,543 SGD
Retailer 9$10,062 SGD
Retailer 2$11,026 SGD
Retailer 10$13,451 SGD
NZ Jewellers$15,269 SGD

38 data points across 17 retailers

17 retailers$6,725 SGD to $15,269 SGD

A
Cheapest Retailer
-
$6,725 SGD
HK$41,100 HKD
A
Retailer 2
-
$6,756 SGD
$5,285 USD
View
B+
Retailer 3
-
$7,214 SGD
$5,643 USD
View
B+
Retailer 4
-
$7,633 SGD
$5,971 USD
View
Final sale: no returns
B+
Retailer 5
-
$8,271 SGD
$6,470 USD
View
B+
Retailer 6
-
$8,271 SGD
$6,470 USD
View
B+
Retailer 7
-
$8,271 SGD
$6,470 USD
View
B+
Retailer 8
-
$8,697 SGD
£5,357 GBP
View
B+
Retailer 9
-
$9,120 SGD
€6,794 EUR
View
B
Retailer 10
-
$9,192 SGD
$7,190 USD
View
B+
Retailer 11
-
$9,192 SGD
$7,190 USD
View
B
Retailer 12
-
$9,499 SGD
$7,430 USD
View
B
Retailer 13
-
$9,543 SGD
$7,465 USD
View
Retailer 14
-
$10,062 SGD
$7,871 USD
View
Price last confirmed 9 days ago
B
Retailer 15
-
$11,026 SGD
£6,791 GBP
View
B
Retailer 16
-
$13,451 SGD
£8,285 GBP
View
Most Expensive
B
NZ Jewellers
1b7dad14-d83a-4a6a-990d-39a4c693f98f · Oct 30
$15,269 SGD
$11,944 USD
View
16 more retailers have this diamond
Prices start from $6,725 SGDSave up to $8,544 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 Round
$6,725 SGD