Radiant|Natural|GIA

1.51ct D SI1 Radiant Natural Diamond

VG • D/SI1 • GIA 1357781607

Certificate GIA 1357781607

Diamond specifications and retailer prices

From $16,232 NZD
$9,133 USD
As of November 1, 2026
Save $5,024 NZD (24%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $21,257 NZD at Jared · As of November 2, 2026
View at Jared

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1357781607. Listed at 7 retailers as of November 1, 2026, with prices from $16,232 to $21,257, a $5,024 spread on the same certified stone. Jared lists it at $21,257. 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

1.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1357781607
Dimensions7.03 × 5.71 × 4.08 mm
L/W Ratio1.23
Culet sizeNone
Top View
7.03 mm5.71 mm1.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1357781607
Side View
Table 68.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 71.5%

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 1
Current: $20,558 NZD|Low: $15,352 NZD|High: $31,349 NZD|Avg: $22,294 NZD|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2$16,888 NZD
Retailer 1$20,558 NZD
Retailer 4$20,856 NZD
Retailer 3$31,349 NZD

36 data points across 4 retailers

7 retailers$16,232 NZD to $21,257 NZD

B+
Cheapest Retailer
-
$16,232 NZD
$9,133 USD
B+
Retailer 2
-
$16,445 NZD
A$14,235 AUD
View
B
Retailer 3
-
$16,888 NZD
$9,502 USD
View
Final sale: no returns
B
Retailer 4
-
$20,558 NZD
£9,108 GBP
View
B
Retailer 5
-
$20,563 NZD
$11,570 USD
View
B
Retailer 6
-
$20,563 NZD
$11,570 USD
View
Most Expensive
B
Jared
147088695 · Nov 2
$21,257 NZD
$11,960 USD
View
6 more retailers have this diamond
Prices start from $16,232 NZDSave up to $5,024 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+
1.51ct Radiant
$16,232 NZD