Round|Natural|GIA

1.51ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 1555390060

Certificate GIA 1555390060

Diamond specifications and retailer prices

From $6,084 SGD
$4,759 USD
As of October 30, 2026
Save $5,322 SGD (47%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $13,573 SGD at NZ Jewellers · As of September 19, 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 1555390060. Listed at 17 retailers as of October 29, 2026, with a 87% 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 angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555390060
Dimensions7.27 × 7.31 × 4.57 mm
L/W Ratio1.01
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather, Needle, Natural
Top View
7.27 mm7.31 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555390060
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.7%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $7,462 SGD|Low: $6,084 SGD|High: $12,099 SGD|Avg: $8,118 SGD|-2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 8$6,084 SGD
Retailer 6$6,896 SGD
Retailer 2$7,352 SGD
Retailer 1$7,462 SGD
Retailer 7$7,798 SGD
Retailer 9$7,798 SGD
Retailer 5$8,054 SGD
Retailer 3$8,415 SGD
Retailer 10$8,494 SGD
Retailer 4$11,406 SGD

41 data points across 10 retailers

17 retailers$6,084 SGD to $11,406 SGD

A
Cheapest Retailer
-
$6,084 SGD
$4,759 USD
A
Retailer 2
-
$6,896 SGD
$5,395 USD
View
Retailer 3
-
$7,071 SGD
$5,531 USD
View
Price last confirmed 24 days ago
Retailer 4
-
$7,071 SGD
$5,531 USD
View
Price last confirmed 19 days ago
Retailer 5
-
$7,352 SGD
$5,751 USD
View
Price last confirmed 43 days ago
Retailer 6
-
$7,352 SGD
$5,751 USD
View
Price last confirmed 31 days ago
A
Retailer 7
-
$7,462 SGD
£4,596 GBP
View
A
Retailer 8
-
$7,798 SGD
$6,100 USD
View
A
Retailer 9
-
$7,798 SGD
$6,100 USD
View
A
Retailer 10
-
$8,054 SGD
$6,300 USD
View
Retailer 11
-
$8,157 SGD
$6,381 USD
View
Price last confirmed 22 days ago
A
Retailer 12
-
$8,415 SGD
€6,269 EUR
View
Retailer 13
-
$8,482 SGD
$6,635 USD
View
Price last confirmed 39 days ago
Retailer 14
-
$8,494 SGD
$6,644 USD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$11,406 SGD
£7,025 GBP
View
Retailer 16
-
$13,052 SGD
$10,210 USD
View
Price last confirmed 25 days ago
Most Expensive
NZ Jewellers
6ad84f01-e27b-4002-bd3a-7a6eb7c9473f · Sep 19
$13,573 SGD
$10,617 USD
View
Price last confirmed 41 days ago
16 more retailers have this diamond
Prices start from $6,084 SGDSave up to $5,322 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
$6,084 SGD