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1.51ct D SI2 Round Natural Diamond

VG • D/SI2 • GIA 6312930159

Shape and cutting style on the report: Round brilliant

Certificate GIA 6312930159

Diamond specifications and retailer prices

From $10,298 SGD
$8,055 USD
As of October 25, 2026
Save $11,755 SGD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $22,052 SGD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

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 very-good cut grade and certified by GIA 6312930159. Listed at 15 retailers as of October 25, 2026, with prices from $10,298 to $22,052, a $11,755 spread on the same certified stone. Diamond Quarter lists it at $22,052. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6312930159
Dimensions7.25 × 7.13 × 4.54 mm
L/W Ratio1.02
Star length50%
Lower girdle80%
Top View
7.25 mm7.13 mm1.51 ctD / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6312930159
Side View
Table 58.0%Crown 37.5°Girdle: STK-THKPavilion 40.6°Culet: NoneDepth 63.7%

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: Oct 25
Current: $14,446 SGD|Low: $10,170 SGD|High: $14,446 SGD|Avg: $12,362 SGD|+4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 9$10,170 SGD
Retailer 5$10,298 SGD
Retailer 7$10,713 SGD
Retailer 3$11,862 SGD
Retailer 8$12,136 SGD
Retailer 6$12,401 SGD
Retailer 4$12,694 SGD
Retailer 2$13,615 SGD
Retailer 11$13,615 SGD
Retailer 10$14,075 SGD
Retailer 1$14,446 SGD

39 data points across 11 retailers

15 retailers$10,298 SGD to $22,052 SGD

B+
Cheapest Retailer
-
$10,298 SGD
$8,055 USD
B+
Retailer 2
-
$10,713 SGD
$8,380 USD
View
B+
Retailer 3
-
$10,923 SGD
$8,544 USD
View
B+
Retailer 4
-
$10,987 SGD
$8,594 USD
View
B+
Retailer 5
-
$11,605 SGD
CA$12,608 CAD
View
B+
Retailer 6
-
$11,862 SGD
$9,279 USD
View
B+
Retailer 7
-
$12,136 SGD
$9,493 USD
View
B+
Retailer 8
-
$12,401 SGD
View
B+
Retailer 9
-
$12,694 SGD
£7,818 GBP
View
B
Retailer 10
-
$13,615 SGD
$10,650 USD
View
B
Retailer 11
-
$13,615 SGD
$10,650 USD
View
B
Retailer 12
-
$13,912 SGD
$10,882 USD
View
B
Retailer 13
-
$14,075 SGD
$11,010 USD
View
B
Retailer 14
-
$14,446 SGD
€10,762 EUR
View
Most Expensive
B
Diamond Quarter
1.51SI2D6359E8AAN · Oct 29
$22,052 SGD
£13,583 GBP
View
14 more retailers have this diamond
Prices start from $10,298 SGDSave up to $11,755 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 Round
$10,298 SGD