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Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2547510952

Certificate GIA 2547510952

Diamond specifications and retailer prices

From $12,533 AUD
$8,804 USD
As of October 31, 2026
Save $11,229 AUD (47%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $23,763 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 2547510952. Listed at 27 retailers as of October 30, 2026, with prices from $12,533 to $23,763, a $11,229 spread on the same certified stone. NZ Jewellers lists it at $23,763. 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
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2547510952
Dimensions7.26 × 7.31 × 4.56 mm
L/W Ratio1.01
Top View
7.26 mm7.31 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2547510952
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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: Oct 31
Current: $15,508 AUD|Low: $13,735 AUD|High: $22,536 AUD|Avg: $17,259 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7$13,735 AUD
Retailer 1$15,508 AUD
Retailer 8$15,684 AUD
Retailer 6$15,699 AUD
Retailer 4$16,405 AUD
Retailer 2$17,085 AUD
Retailer 5$20,946 AUD
Retailer 3$22,267 AUD

38 data points across 8 retailers

27 retailers$12,533 AUD to $23,763 AUD

B+
Cheapest Retailer
-
$12,533 AUD
$8,804 USD
B+
Retailer 2
-
$12,975 AUD
$9,114 USD
View
B+
Retailer 3
-
$13,230 AUD
$9,293 USD
View
B+
Retailer 4
-
$13,586 AUD
$9,543 USD
View
B+
Retailer 5
-
$13,729 AUD
CA$13,394 CAD
View
B+
Retailer 6
-
$13,735 AUD
$9,648 USD
View
Final sale: no returns
B+
Retailer 7
-
$14,101 AUD
$9,905 USD
View
B+
Retailer 8
-
$14,257 AUD
$10,015 USD
View
B+
Retailer 9
-
$15,208 AUD
$10,683 USD
View
B+
Retailer 10
-
$15,446 AUD
$10,850 USD
View
B+
Retailer 11
-
$15,508 AUD
£8,577 GBP
View
B+
Retailer 12
-
$15,684 AUD
$11,017 USD
View
Retailer 13
-
$15,699 AUD
View
Price last confirmed 9 days ago
B+
Retailer 14
-
$15,890 AUD
$11,162 USD
View
B+
Retailer 15
-
$16,405 AUD
£9,074 GBP
View
B+
Retailer 16
-
$16,458 AUD
$11,561 USD
View
B+
Retailer 17
-
$16,713 AUD
$11,740 USD
View
B+
Retailer 18
-
$16,713 AUD
$11,740 USD
View
B+
Retailer 19
-
$17,085 AUD
€11,430 EUR
View
B
Retailer 20
-
$17,268 AUD
$12,130 USD
View
B
Retailer 21
-
$17,354 AUD
$12,190 USD
View
B
Retailer 22
-
$17,822 AUD
$12,519 USD
View
B
Retailer 23
-
$18,273 AUD
$12,836 USD
View
Retailer 24
-
$18,762 AUD
$13,179 USD
View
Price last confirmed 10 days ago
B
Retailer 25
-
$20,946 AUD
ZAR 237,699 ZAR
View
B
Retailer 26
-
$22,267 AUD
£12,316 GBP
View
Most Expensive
B
NZ Jewellers
14b7eaaa-b1aa-4f7f-8bb9-08ca8103b316 · Oct 30
$23,763 AUD
$16,692 USD
View
26 more retailers have this diamond
Prices start from $12,533 AUDSave up to $11,229 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.

B+
1.51ct Round
$12,533 AUD