CaratHunter
Plans
Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

VG • D/SI1 • GIA 6167896378

Certificate GIA 6167896378

Diamond specifications and retailer prices

From $1,320 AUD
As of November 6, 2026
Save $826 AUD (38%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,146 AUD 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 $1,320 to $2,146, a $826 spread on the same certified stone. GemTrove lists it at $2,146. 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: $2,146 AUD|Low: $1,319 AUD|High: $2,473 AUD|Avg: $1,816 AUD
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 20, 2026
Retailer 2$1,320 AUD
Retailer 5$1,512 AUD
Retailer 4$1,544 AUD
Retailer 3$1,575 AUD
Retailer 8$1,907 AUD
Retailer 9$1,907 AUD
Retailer 6$1,965 AUD
GemTrove$2,146 AUD
Retailer 7$2,473 AUD

2 data points across 9 retailers

8 retailers$1,320 AUD to $2,146 AUD

B+
Cheapest Retailer
-
$1,320 AUD
B
Retailer 2
-
$1,512 AUD
View
B
Retailer 3
-
$1,544 AUD
View
B
Retailer 4
-
$1,575 AUD
View
B
Retailer 5
-
$1,907 AUD
View
B
Retailer 6
-
$1,907 AUD
View
B
Retailer 7
-
$1,965 AUD
View
Most Expensive
B
GemTrove
GT-N-00950848-98 · Nov 6
$2,146 AUD
View
7 more retailers have this diamond
Prices start from $1,320 AUDSave up to $826 AUD

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
$1,320 AUD