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Cushion|Natural|GIA

1.70ct H SI1 Cushion Natural Diamond

ID • H/SI1 • GIA 1358142620

Certificate GIA 1358142620

Diamond specifications and retailer prices

From $11,662 AUD
$8,173 USD
As of November 2, 2026
Save $9,022 AUD (44%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $20,684 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.7ct natural cushion diamond

This 1.7ct natural cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1358142620. Listed at 20 retailers as of November 1, 2026, with prices from $11,662 to $20,684, a $9,022 spread on the same certified stone. MOH London lists it at $20,684. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.70
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1358142620
Dimensions7.58 × 6.67 × 4.27 mm
L/W Ratio1.14
Culet sizeNone
Top View
7.58 mm6.67 mm1.70 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 1358142620
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.0%

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 2
Current: $20,684 AUD|Low: $11,037 AUD|High: $20,934 AUD|Avg: $15,359 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 8$11,662 AUD
Retailer 6$13,244 AUD
Retailer 7$13,244 AUD
Retailer 3$14,493 AUD
Retailer 5$14,565 AUD
Retailer 2$15,896 AUD
Retailer 4$19,457 AUD
MOH London$20,684 AUD

44 data points across 8 retailers

20 retailers$11,662 AUD to $20,684 AUD

B+
Cheapest Retailer
-
$11,662 AUD
$8,173 USD
B
Retailer 2
-
$12,247 AUD
$8,583 USD
View
B
Retailer 3
-
$12,400 AUD
$8,690 USD
View
B
Retailer 4
-
$12,791 AUD
$8,964 USD
View
B
Retailer 5
-
$12,840 AUD
CA$12,498 CAD
View
B
Retailer 6
-
$13,127 AUD
$9,200 USD
View
B
Retailer 7
-
$13,244 AUD
$9,282 USD
View
B
Retailer 8
-
$13,244 AUD
$9,282 USD
View
Final sale: no returns
B
Retailer 9
-
$14,493 AUD
£7,998 GBP
View
Retailer 10
-
$14,565 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$14,674 AUD
$10,284 USD
View
B
Retailer 12
-
$14,736 AUD
$10,327 USD
View
B
Retailer 13
-
$15,265 AUD
$10,698 USD
View
B
Retailer 14
-
$15,582 AUD
$10,920 USD
View
B
Retailer 15
-
$15,582 AUD
$10,920 USD
View
B
Retailer 16
-
$15,896 AUD
€10,610 EUR
View
B
Retailer 17
-
$16,110 AUD
$11,290 USD
View
Retailer 18
-
$17,428 AUD
$12,214 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
$19,457 AUD
ZAR 220,288 ZAR
View
Most Expensive
B
MOH London
86971E802 · Nov 1
$20,684 AUD
£11,414 GBP
View
19 more retailers have this diamond
Prices start from $11,662 AUDSave up to $9,022 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+
1.70ct Cushion
$11,662 AUD