CaratHunter
Plans
Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 6335776237

Certificate GIA 6335776237

Diamond specifications and retailer prices

From $6,856 AUD
As of November 6, 2026
Save $6,528 AUD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,384 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6335776237. Listed at 15 retailers as of November 4, 2026, with prices from $6,856 to $13,384, a $6,528 spread on the same certified stone. MOH London lists it at $13,384. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6335776237
Dimensions7.12 × 6.38 × 3.93 mm
L/W Ratio1.12
Top View
7.12 mm6.38 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6335776237
Side View
Table 67.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $13,384 AUD|Low: $6,856 AUD|High: $13,582 AUD|Avg: $9,021 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 8$6,856 AUD
Retailer 5$6,986 AUD
Retailer 9$7,714 AUD
Retailer 6$8,252 AUD
Retailer 2$8,626 AUD
Retailer 7$8,629 AUD
Retailer 3$9,370 AUD
Retailer 4$11,113 AUD
MOH London$13,384 AUD

45 data points across 9 retailers

15 retailers$6,856 AUD to $13,384 AUD

B
Cheapest Retailer
-
$6,856 AUD
Retailer 2
-
$6,986 AUD
View
Price last confirmed 10 days ago
B
Retailer 3
-
$7,115 AUD
View
B
Retailer 4
-
$7,197 AUD
View
B
Retailer 5
-
$7,289 AUD
View
B
Retailer 6
-
$7,682 AUD
View
B
Retailer 7
-
$7,714 AUD
View
Retailer 8
-
$8,252 AUD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$8,626 AUD
View
B
Retailer 10
-
$8,629 AUD
View
B
Retailer 11
-
$8,699 AUD
View
B
Retailer 12
-
$9,370 AUD
View
Retailer 13
-
$10,047 AUD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$11,113 AUD
View
Most Expensive
B
MOH London
B1B32B234 · Nov 4
$13,384 AUD
£7,241 GBP
View
14 more retailers have this diamond
Prices start from $6,856 AUDSave up to $6,528 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
1.51ct Cushion
$6,856 AUD