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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

VG • D/SI1 • GIA 6421683223

Certificate GIA 6421683223

Diamond specifications and retailer prices

From $1,025 SGD
As of November 6, 2026
Save $1,123 SGD (52%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,148 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6421683223. Listed at 16 retailers as of November 4, 2026, with prices from $1,025 to $2,148, a $1,123 spread on the same certified stone. MOH London lists it at $2,148. 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

0.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6421683223
Dimensions4.68 × 4.18 × 2.92 mm
L/W Ratio1.12
Top View
4.68 mm4.18 mm0.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6421683223
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.8%

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: Nov 6
Current: $2,148 SGD|Low: $1,124 SGD|High: $2,178 SGD|Avg: $1,528 SGD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5$1,173 SGD
Retailer 9$1,182 SGD
Retailer 4$1,185 SGD
Retailer 8$1,203 SGD
Retailer 6$1,397 SGD
Retailer 10$1,555 SGD
Retailer 2$1,684 SGD
Retailer 7$1,808 SGD
Retailer 3$1,856 SGD
MOH London$2,148 SGD

45 data points across 10 retailers

16 retailers$1,025 SGD to $2,148 SGD

B+
Cheapest Retailer
-
$1,025 SGD
Retailer 2
-
$1,173 SGD
View
Price last confirmed 17 days ago
B
Retailer 3
-
$1,177 SGD
View
B
Retailer 4
-
$1,182 SGD
View
B
Retailer 5
-
$1,185 SGD
View
Retailer 6
-
$1,203 SGD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$1,215 SGD
View
B
Retailer 8
-
$1,269 SGD
View
B
Retailer 9
-
$1,269 SGD
View
B
Retailer 10
-
$1,320 SGD
View
B
Retailer 11
-
$1,373 SGD
View
B
Retailer 12
-
$1,397 SGD
View
B
Retailer 13
-
$1,684 SGD
View
Retailer 14
-
$1,808 SGD
View
Price last confirmed 33 days ago
B
Retailer 15
-
$1,856 SGD
View
Most Expensive
B
MOH London
D98507D3B · Nov 4
$2,148 SGD
£1,320 GBP
View
15 more retailers have this diamond
Prices start from $1,025 SGDSave up to $1,123 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+
0.51ct Cushion
$1,025 SGD