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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 $7,835 AUD
HK$43,000 HKD
As of November 1, 2026
Save $3,603 AUD (31%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $17,428 AUD 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 November 1, 2026, with a 46% 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: Nov 1
Current: $11,438 AUD|Low: $7,763 AUD|High: $14,697 AUD|Avg: $10,074 AUD|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 5$7,835 AUD
Retailer 11$8,925 AUD
Retailer 9$9,037 AUD
Retailer 10$9,088 AUD
Retailer 7$9,618 AUD
Retailer 3$9,665 AUD
Retailer 2$10,580 AUD
Retailer 8$10,764 AUD
Retailer 4$10,989 AUD
Retailer 1$11,438 AUD
Retailer 6$14,599 AUD

39 data points across 11 retailers

15 retailers$7,835 AUD to $11,438 AUD

A
Cheapest Retailer
-
$7,835 AUD
HK$43,000 HKD
Retailer 2
-
$8,925 AUD
SGD 8,472 SGD
View
Price last confirmed 17 days ago
Retailer 3
-
$9,037 AUD
$6,348 USD
View
Price last confirmed 11 days ago
Retailer 4
-
$9,088 AUD
$6,384 USD
View
Price last confirmed 12 days ago
Retailer 5
-
$9,619 AUD
$6,757 USD
View
Price last confirmed 16 days ago
Retailer 6
-
$9,665 AUD
$6,789 USD
View
Price last confirmed 11 days ago
Retailer 7
-
$10,421 AUD
$7,320 USD
View
Price last confirmed 12 days ago
Retailer 8
-
$10,580 AUD
$7,432 USD
View
Price last confirmed 16 days ago
Retailer 9
-
$10,651 AUD
$7,482 USD
View
Price last confirmed 14 days ago
Retailer 10
-
$10,764 AUD
$7,561 USD
View
Price last confirmed 12 days ago
B+
Retailer 11
-
$10,989 AUD
£6,078 GBP
View
B+
Retailer 12
-
$11,438 AUD
€7,652 EUR
View
Retailer 13
-
$12,024 AUD
$8,446 USD
View
Price last confirmed 11 days ago
Retailer 14
-
$14,599 AUD
£8,075 GBP
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
c8cb68a7-a504-4204-b599-d2c867a570ef · Oct 20
$17,428 AUD
$12,242 USD
View
Price last confirmed 11 days ago
14 more retailers have this diamond
Prices start from $7,835 AUDSave up to $3,603 AUD

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
$7,835 AUD