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Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 7541811764

Certificate GIA 7541811764

Diamond specifications and retailer prices

From $8,677 AUD
₹580,499 INR
As of November 1, 2026
Save $10,274 AUD (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $18,951 AUD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7541811764. Listed at 14 retailers as of October 30, 2026, with prices from $8,677 to $18,951, a $10,274 spread on the same certified stone. NZ Jewellers lists it at $18,951. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7541811764
Dimensions7.28 × 7.32 × 4.61 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Top View
7.28 mm7.32 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7541811764
Side View
Table 56.0%Crown 36°Girdle: ThinPavilion 41.2°Culet: NoneDepth 63.1%

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: $18,951 AUD|Low: $8,657 AUD|High: $19,418 AUD|Avg: $11,760 AUD|-2.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 2$8,677 AUD
Retailer 4$9,158 AUD
Retailer 5$9,651 AUD
Retailer 13$9,794 AUD
Retailer 12$10,442 AUD
Retailer 8$10,612 AUD
Retailer 7$10,902 AUD
Retailer 11$10,927 AUD
Retailer 3$11,568 AUD
Retailer 10$11,864 AUD
Retailer 9$13,920 AUD
Retailer 6$15,791 AUD
NZ Jewellers$18,951 AUD

25 data points across 13 retailers

14 retailers$8,677 AUD to $18,951 AUD

A
Cheapest Retailer
-
$8,677 AUD
₹580,499 INR
A
Retailer 2
-
$8,917 AUD
View
A
Retailer 3
-
$9,158 AUD
$6,433 USD
View
Final sale: no returns
A
Retailer 4
-
$9,651 AUD
$6,779 USD
View
A
Retailer 5
-
$9,794 AUD
$6,880 USD
View
A
Retailer 6
-
$10,442 AUD
$7,335 USD
View
A
Retailer 7
-
$10,612 AUD
£5,869 GBP
View
A
Retailer 8
-
$10,902 AUD
£6,030 GBP
View
Retailer 9
-
$10,927 AUD
View
Price last confirmed 11 days ago
A
Retailer 10
-
$11,568 AUD
$8,126 USD
View
B+
Retailer 11
-
$11,864 AUD
€7,937 EUR
View
B+
Retailer 12
-
$13,920 AUD
ZAR 157,963 ZAR
View
B+
Retailer 13
-
$15,791 AUD
£8,734 GBP
View
Most Expensive
B
NZ Jewellers
0b4a8bda-cb19-441c-9a07-5033c22d5226 · Oct 30
$18,951 AUD
$13,312 USD
View
13 more retailers have this diamond
Prices start from $8,677 AUDSave up to $10,274 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
$8,677 AUD