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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 $15,621 NZD
$8,804 USD
As of November 2, 2026
Save $13,996 NZD (47%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $29,617 NZD 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 $15,621 to $29,617, a $13,996 spread on the same certified stone. NZ Jewellers lists it at $29,617. 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: Nov 2
Current: $20,445 NZD|Low: $17,118 NZD|High: $28,088 NZD|Avg: $21,514 NZD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7$17,118 NZD
Retailer 2$19,328 NZD
Retailer 8$19,547 NZD
Retailer 6$19,567 NZD
Retailer 1$20,445 NZD
Retailer 3$21,294 NZD
Retailer 5$26,106 NZD
Retailer 4$27,752 NZD

38 data points across 8 retailers

27 retailers$15,621 NZD to $29,617 NZD

B+
Cheapest Retailer
-
$15,621 NZD
$8,804 USD
B+
Retailer 2
-
$16,171 NZD
$9,114 USD
View
B+
Retailer 3
-
$16,489 NZD
$9,293 USD
View
B+
Retailer 4
-
$16,933 NZD
$9,543 USD
View
B+
Retailer 5
-
$17,111 NZD
CA$13,394 CAD
View
B+
Retailer 6
-
$17,118 NZD
$9,648 USD
View
Final sale: no returns
B+
Retailer 7
-
$17,574 NZD
$9,905 USD
View
B+
Retailer 8
-
$17,770 NZD
$10,015 USD
View
B+
Retailer 9
-
$18,954 NZD
$10,683 USD
View
B+
Retailer 10
-
$19,251 NZD
$10,850 USD
View
B+
Retailer 11
-
$19,328 NZD
£8,577 GBP
View
B+
Retailer 12
-
$19,547 NZD
$11,017 USD
View
Retailer 13
-
$19,567 NZD
A$16,966 AUD
View
Price last confirmed 9 days ago
B+
Retailer 14
-
$19,805 NZD
$11,162 USD
View
B+
Retailer 15
-
$20,445 NZD
£9,073 GBP
View
B+
Retailer 16
-
$20,513 NZD
$11,561 USD
View
B+
Retailer 17
-
$20,830 NZD
$11,740 USD
View
B+
Retailer 18
-
$20,830 NZD
$11,740 USD
View
B+
Retailer 19
-
$21,294 NZD
€11,430 EUR
View
B
Retailer 20
-
$21,522 NZD
$12,130 USD
View
B
Retailer 21
-
$21,629 NZD
$12,190 USD
View
B
Retailer 22
-
$22,212 NZD
$12,519 USD
View
B
Retailer 23
-
$22,775 NZD
$12,836 USD
View
Retailer 24
-
$23,383 NZD
$13,179 USD
View
Price last confirmed 10 days ago
B
Retailer 25
-
$26,106 NZD
ZAR 237,699 ZAR
View
B
Retailer 26
-
$27,752 NZD
£12,316 GBP
View
Most Expensive
B
NZ Jewellers
14b7eaaa-b1aa-4f7f-8bb9-08ca8103b316 · Oct 30
$29,617 NZD
$16,692 USD
View
26 more retailers have this diamond
Prices start from $15,621 NZDSave up to $13,996 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 Round
$15,621 NZD