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Round|Natural|GIA

1.51ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 1528655808

Certificate GIA 1528655808

Diamond specifications and retailer prices

From $9,766 NZD
HK$43,000 HKD
As of October 31, 2026
Save $4,589 NZD (32%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $21,721 NZD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1528655808. Listed at 15 retailers as of October 29, 2026, with a 47% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.51
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1528655808
Dimensions7.31 × 7.26 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.31 mm7.26 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1528655808
Side View
Table 59.0%Crown 34.5°Girdle: Sli. ThickPavilion 41.8°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $9,766 NZD|Low: $9,675 NZD|High: $18,318 NZD|Avg: $12,550 NZD|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 1$9,766 NZD
Retailer 11$11,124 NZD
Retailer 9$11,263 NZD
Retailer 10$11,327 NZD
Retailer 7$11,987 NZD
Retailer 3$12,046 NZD
Retailer 2$13,187 NZD
Retailer 8$13,415 NZD
Retailer 5$13,768 NZD
Retailer 4$14,355 NZD
Retailer 6$18,196 NZD

38 data points across 11 retailers

15 retailers$9,766 NZD to $14,355 NZD

A
Cheapest Retailer
-
$9,766 NZD
HK$43,000 HKD
Retailer 2
-
$11,124 NZD
SGD 8,472 SGD
View
Price last confirmed 16 days ago
Retailer 3
-
$11,263 NZD
$6,348 USD
View
Price last confirmed 10 days ago
Retailer 4
-
$11,327 NZD
$6,384 USD
View
Price last confirmed 11 days ago
Retailer 5
-
$11,989 NZD
$6,757 USD
View
Price last confirmed 15 days ago
Retailer 6
-
$12,046 NZD
$6,789 USD
View
Price last confirmed 10 days ago
Retailer 7
-
$12,988 NZD
$7,320 USD
View
Price last confirmed 11 days ago
Retailer 8
-
$13,187 NZD
$7,432 USD
View
Price last confirmed 16 days ago
Retailer 9
-
$13,275 NZD
$7,482 USD
View
Price last confirmed 13 days ago
Retailer 10
-
$13,415 NZD
$7,561 USD
View
Price last confirmed 11 days ago
B+
Retailer 11
-
$13,768 NZD
£6,110 GBP
View
B+
Retailer 12
-
$14,355 NZD
€7,705 EUR
View
Retailer 13
-
$14,986 NZD
$8,446 USD
View
Price last confirmed 11 days ago
Retailer 14
-
$18,196 NZD
£8,075 GBP
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
c8cb68a7-a504-4204-b599-d2c867a570ef · Oct 20
$21,721 NZD
$12,242 USD
View
Price last confirmed 11 days ago
14 more retailers have this diamond
Prices start from $9,766 NZDSave up to $4,589 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.

A
1.51ct Round
$9,766 NZD