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Cushion|Natural|GIA

1.71ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 2158274503

Certificate GIA 2158274503

Diamond specifications and retailer prices

From $10,499 AUD
$7,375 USD
As of October 28, 2026
Save $4,121 AUD (28%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $19,432 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.71ct natural cushion diamond

This 1.71ct natural cushion sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2158274503. Listed at 9 retailers as of October 28, 2026, with a 39% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.71
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2158274503
Dimensions6.88 × 6.65 × 4.41 mm
L/W Ratio1.03
Culet sizeNone
Top View
6.88 mm6.65 mm1.71 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2158274503
Side View
Table 67.0%CrownGirdle: VTN-THKPavilionCulet: NoneDepth 66.3%

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: Oct 28
Current: $19,432 AUD|Low: $10,270 AUD|High: $19,665 AUD|Avg: $13,708 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4$10,499 AUD
Retailer 5$11,296 AUD
Retailer 6$13,134 AUD
Retailer 3$13,152 AUD
Retailer 7$13,937 AUD
Retailer 2$14,620 AUD
MOH London$19,432 AUD

41 data points across 7 retailers

9 retailers$10,499 AUD to $14,620 AUD

B
Cheapest Retailer
-
$10,499 AUD
$7,375 USD
B
Retailer 2
-
$11,296 AUD
$7,935 USD
View
Final sale: no returns
C
Retailer 3
-
$13,134 AUD
$9,226 USD
View
B
Retailer 4
-
$13,152 AUD
£7,275 GBP
View
C
Retailer 5
-
$13,937 AUD
$9,790 USD
View
C
Retailer 6
-
$13,937 AUD
$9,790 USD
View
C
Retailer 7
-
$14,407 AUD
$10,120 USD
View
B
Retailer 8
-
$14,620 AUD
€9,781 EUR
View
Most Expensive
MOH London
466CBE57A · Nov 1
$19,432 AUD
£10,748 GBP
View
Price under review
8 more retailers have this diamond
Prices start from $10,499 AUDSave up to $4,121 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
1.71ct Cushion
$10,499 AUD