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Round|Natural|GIA

1.51ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6511657389

Certificate GIA 6511657389

Diamond specifications and retailer prices

From $7,331 SGD
HK$44,800 HKD
As of October 30, 2026
Save $6,645 SGD (48%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $17,114 SGD at NZ Jewellers · As of September 25, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6511657389. Listed at 14 retailers as of October 29, 2026, with a 91% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6511657389
Dimensions7.32 × 7.28 × 4.51 mm
L/W Ratio1.01
Top View
7.32 mm7.28 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6511657389
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.0%

Caratlytics Score

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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: Oct 30
Current: $8,913 SGD|Low: $7,216 SGD|High: $14,432 SGD|Avg: $9,205 SGD|-6.4%
Retailer 1
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
October 30, 2026
Retailer 8$7,331 SGD
Retailer 2$7,351 SGD
Retailer 7$7,610 SGD
Retailer 10$7,921 SGD
Retailer 13$8,243 SGD
Retailer 11$8,340 SGD
Retailer 14$8,684 SGD
Retailer 1$8,913 SGD
Retailer 12$8,923 SGD
Retailer 3$9,638 SGD
Retailer 6$9,770 SGD
Retailer 5$10,426 SGD
Retailer 4$10,649 SGD
Retailer 9$13,976 SGD

37 data points across 14 retailers

14 retailers$7,331 SGD to $13,976 SGD

A
Cheapest Retailer
-
$7,331 SGD
HK$44,800 HKD
Retailer 2
-
$7,351 SGD
$5,750 USD
View
Price last confirmed 9 days ago
A
Retailer 3
-
$7,610 SGD
$5,953 USD
View
A
Retailer 4
-
$7,921 SGD
$6,196 USD
View
A
Retailer 5
-
$8,243 SGD
$6,448 USD
View
A
Retailer 6
-
$8,340 SGD
$6,524 USD
View
Final sale: no returns
A
Retailer 7
-
$8,684 SGD
$6,793 USD
View
A
Retailer 8
-
$8,913 SGD
£5,489 GBP
View
A
Retailer 9
-
$8,923 SGD
$6,980 USD
View
A
Retailer 10
-
$9,638 SGD
View
A
Retailer 11
-
$9,770 SGD
A$11,758 AUD
View
Retailer 12
-
$10,426 SGD
$8,155 USD
View
Price last confirmed 7 days ago
B+
Retailer 13
-
$13,976 SGD
£8,608 GBP
View
Most Expensive
NZ Jewellers
67d7e602-8786-4201-9a30-7eff39b7dc82 · Sep 25
$17,114 SGD
$13,387 USD
View
Price last confirmed 35 days ago
13 more retailers have this diamond
Prices start from $7,331 SGDSave up to $6,645 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
$7,331 SGD