CaratHunter
Plans
Oval|Natural|GIA

16.50ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 2185093710

Certificate GIA 2185093710

Diamond specifications and retailer prices

From $1,008,143 NZD
$568,192 USD
As of October 31, 2026
Save $46,168 NZD (4%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,054,310 NZD at Adiamor · As of November 1, 2026
View at Adiamor

About this 16.5ct natural oval diamond

This 16.5ct natural oval sits in the over five carat band, graded J 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 2185093710. Listed at 3 retailers as of October 31, 2026, with a relatively tight 5% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

16.50
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2185093710
Dimensions20.83 × 14.78 × 8.57 mm
L/W Ratio1.41
Top View
20.83 mm14.78 mm16.50 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2185093710
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.0%

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 31
Current: $1,023,026 NZD|Low: $987,155 NZD|High: $1,221,140 NZD|Avg: $1,074,910 NZD|-0.9%
Retailer 1
Retailer 2
Retailer 3
November 2, 2026
Retailer 3$996,532 NZD
Retailer 1$1,023,026 NZD
Retailer 2$1,221,140 NZD

38 data points across 3 retailers

3 retailers$1,008,143 NZD to $1,054,310 NZD

B
Cheapest Retailer
-
$1,008,143 NZD
$568,192 USD
B
Retailer 2
-
$1,023,026 NZD
₹54,912,409 INR
View
Most Expensive
B
Adiamor
D-45447511 · Nov 1
$1,054,310 NZD
$594,212 USD
View
2 more retailers have this diamond
Prices start from $1,008,143 NZDSave up to $46,168 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
16.50ct Oval
$1,008,143 NZD