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Radiant|Natural|GIA

1.80ct I VS1 Radiant Natural Diamond

ID • I/VS1 • GIA 09

Certificate GIA 09

Diamond specifications and retailer prices

From $19,202 NZD
$10,804 USD
As of November 2, 2026
Save $4,516 NZD (19%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $23,718 NZD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.8ct natural radiant diamond

This 1.8ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 3 retailers as of October 31, 2026, with prices from $19,202 to $23,718, a $4,516 spread on the same certified stone. Blue Nile lists it at $23,718. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.80
Carat
I
Colour
VS1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 09
Dimensions8.15 × 6.38 × 4.35 mm
L/W Ratio1.28
Top View
8.15 mm6.38 mm1.80 ctI / VS1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 09
Side View
Table 68.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 68.1%

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: $23,718 NZD|Low: $18,962 NZD|High: $24,271 NZD|Avg: $21,306 NZD|-2.3%
Blue Nile
Retailer 2
Retailer 3
September 23, 2026
Retailer 2$19,202 NZD
Retailer 3$20,832 NZD
Blue Nile$23,718 NZD

6 data points across 3 retailers

3 retailers$19,202 NZD to $23,718 NZD

B+
Cheapest Retailer
-
$19,202 NZD
$10,804 USD
B
Retailer 2
-
$20,832 NZD
$11,721 USD
View
Most Expensive
B
Blue Nile
9078234 · Oct 31
$23,718 NZD
$13,345 USD
View
2 more retailers have this diamond
Prices start from $19,202 NZDSave up to $4,516 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+
1.80ct Radiant
$19,202 NZD