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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 $14,501 NZD
$8,173 USD
As of October 31, 2026
Save $11,219 NZD (44%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $25,720 NZD 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 October 31, 2026, with prices from $14,501 to $25,720, a $11,219 spread on the same certified stone. MOH London lists it at $25,720. 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: Oct 31
Current: $25,720 NZD|Low: $13,724 NZD|High: $26,031 NZD|Avg: $19,099 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 8$14,501 NZD
Retailer 6$16,469 NZD
Retailer 7$16,469 NZD
Retailer 3$18,022 NZD
Retailer 5$18,111 NZD
Retailer 2$19,767 NZD
Retailer 4$24,194 NZD
MOH London$25,720 NZD

44 data points across 8 retailers

20 retailers$14,501 NZD to $25,720 NZD

B+
Cheapest Retailer
-
$14,501 NZD
$8,173 USD
B
Retailer 2
-
$15,229 NZD
$8,583 USD
View
B
Retailer 3
-
$15,419 NZD
$8,690 USD
View
B
Retailer 4
-
$15,905 NZD
$8,964 USD
View
B
Retailer 5
-
$15,966 NZD
CA$12,498 CAD
View
B
Retailer 6
-
$16,324 NZD
$9,200 USD
View
B
Retailer 7
-
$16,469 NZD
$9,282 USD
View
B
Retailer 8
-
$16,469 NZD
$9,282 USD
View
Final sale: no returns
B
Retailer 9
-
$18,022 NZD
£7,998 GBP
View
Retailer 10
-
$18,111 NZD
A$15,703 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$18,247 NZD
$10,284 USD
View
B
Retailer 12
-
$18,323 NZD
$10,327 USD
View
B
Retailer 13
-
$18,981 NZD
$10,698 USD
View
B
Retailer 14
-
$19,375 NZD
$10,920 USD
View
B
Retailer 15
-
$19,375 NZD
$10,920 USD
View
B
Retailer 16
-
$19,767 NZD
€10,610 EUR
View
B
Retailer 17
-
$20,032 NZD
$11,290 USD
View
Retailer 18
-
$21,671 NZD
$12,214 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
$24,194 NZD
ZAR 220,288 ZAR
View
Most Expensive
B
MOH London
86971E802 · Nov 1
$25,720 NZD
£11,414 GBP
View
19 more retailers have this diamond
Prices start from $14,501 NZDSave up to $11,219 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+
1.70ct Cushion
$14,501 NZD