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Cushion|Natural|GIA

1.59ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 1497425506

Certificate GIA 1497425506

Diamond specifications and retailer prices

From $16,685 NZD
$9,388 USD
As of October 31, 2026
Save $1,603 NZD (9%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $18,288 NZD at Jared · As of November 2, 2026
View at Jared

About this 1.59ct natural cushion diamond

This 1.59ct natural cushion sits in the one-and-a-half to two carat band, graded I 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 1497425506. Listed at 4 retailers as of October 31, 2026, with a relatively tight 10% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.59
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.48°
Pavilion angle36.97°
OriginNatural
Grading LabGIA
CertificateGIA 1497425506
Dimensions7.69 × 6.05 × 4.22 mm
L/W Ratio1.27
Key to symbols
Crystal, Cloud, Needle
Top View
7.69 mm6.05 mm1.59 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1497425506
Side View
Table 66.0%Crown 36.48°Girdle: STK-VTKPavilion 36.97°Culet: NoneDepth 69.6%

Caratlytics Score

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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 31
Current: $18,288 NZD|Low: $16,685 NZD|High: $18,306 NZD|Avg: $17,760 NZD|-0.1%
Jared
Retailer 2
Retailer 3
Retailer 4
October 15, 2026
Retailer 2$16,685 NZD
Retailer 3$17,702 NZD
Retailer 4$17,702 NZD
Jared$18,288 NZD

5 data points across 4 retailers

4 retailers$16,685 NZD to $18,288 NZD

B
Cheapest Retailer
-
$16,685 NZD
$9,388 USD
B
Retailer 2
-
$17,702 NZD
$9,960 USD
View
B
Retailer 3
-
$17,702 NZD
$9,960 USD
View
Most Expensive
B
Jared
153084258 · Nov 2
$18,288 NZD
$10,290 USD
View
3 more retailers have this diamond
Prices start from $16,685 NZDSave up to $1,603 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
1.59ct Cushion
$16,685 NZD