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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

VG • D/SI1 • GIA 6167896378

Certificate GIA 6167896378

Diamond specifications and retailer prices

From $1,636 NZD
As of November 6, 2026
Save $1,023 NZD (38%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,659 NZD at GemTrove · As of November 6, 2026
View at GemTrove

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 6167896378. Listed at 8 retailers as of November 6, 2026, with prices from $1,636 to $2,659, a $1,023 spread on the same certified stone. GemTrove lists it at $2,659. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6167896378
Dimensions5.21 × 4.51 × 2.92 mm
L/W Ratio1.16
Top View
5.21 mm4.51 mm0.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6167896378
Side View
Table 65.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 64.7%

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: Nov 6
Current: $2,659 NZD|Low: $1,634 NZD|High: $3,065 NZD|Avg: $2,251 NZD
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 20, 2026
Retailer 2$1,636 NZD
Retailer 5$1,874 NZD
Retailer 4$1,914 NZD
Retailer 3$1,952 NZD
Retailer 8$2,363 NZD
Retailer 9$2,363 NZD
Retailer 6$2,435 NZD
GemTrove$2,659 NZD
Retailer 7$3,065 NZD

2 data points across 9 retailers

8 retailers$1,636 NZD to $2,659 NZD

B+
Cheapest Retailer
-
$1,636 NZD
B
Retailer 2
-
$1,874 NZD
View
B
Retailer 3
-
$1,914 NZD
View
B
Retailer 4
-
$1,952 NZD
View
B
Retailer 5
-
$2,363 NZD
View
B
Retailer 6
-
$2,363 NZD
View
B
Retailer 7
-
$2,435 NZD
View
Most Expensive
B
GemTrove
GT-N-00950848-98 · Nov 6
$2,659 NZD
A$2,268 AUD
View
7 more retailers have this diamond
Prices start from $1,636 NZDSave up to $1,023 NZD

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
$1,636 NZD