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Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2527507448

Certificate GIA 2527507448

Diamond specifications and retailer prices

From $14,558 NZD
$8,205 USD
As of November 1, 2026
Save $12,150 NZD (45%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $26,709 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 2527507448. Listed at 27 retailers as of October 30, 2026, with prices from $14,558 to $26,709, a $12,150 spread on the same certified stone. NZ Jewellers lists it at $26,709. 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 angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2527507448
Dimensions7.28 × 7.33 × 4.57 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.28 mm7.33 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2527507448
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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: $15,279 NZD|Low: $12,732 NZD|High: $25,330 NZD|Avg: $18,628 NZD|+20.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 1$15,279 NZD
Retailer 7$16,024 NZD
Retailer 4$17,407 NZD
Retailer 6$17,615 NZD
Retailer 8$17,628 NZD
Retailer 2$19,167 NZD
Retailer 5$23,543 NZD
Retailer 3$25,028 NZD

40 data points across 8 retailers

27 retailers$14,558 NZD to $26,709 NZD

A
Cheapest Retailer
-
$14,558 NZD
$8,205 USD
A
Retailer 2
-
$15,005 NZD
$8,457 USD
View
A
Retailer 3
-
$15,279 NZD
$8,611 USD
View
B+
Retailer 4
-
$15,469 NZD
$8,718 USD
View
B+
Retailer 5
-
$15,898 NZD
$8,960 USD
View
B+
Retailer 6
-
$16,024 NZD
$9,031 USD
View
Final sale: no returns
B+
Retailer 7
-
$16,025 NZD
$9,032 USD
View
B+
Retailer 8
-
$17,087 NZD
$9,630 USD
View
Retailer 9
-
$17,362 NZD
$9,785 USD
View
Price last confirmed 51 days ago
B+
Retailer 10
-
$17,362 NZD
$9,785 USD
View
B+
Retailer 11
-
$17,407 NZD
£7,725 GBP
View
Retailer 12
-
$17,615 NZD
A$15,274 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$17,628 NZD
$9,935 USD
View
Retailer 14
-
$17,736 NZD
$9,996 USD
View
Price last confirmed 10 days ago
B+
Retailer 15
-
$17,825 NZD
$10,046 USD
View
B+
Retailer 16
-
$17,888 NZD
$10,082 USD
View
B+
Retailer 17
-
$18,559 NZD
$10,460 USD
View
B+
Retailer 18
-
$18,559 NZD
$10,460 USD
View
B+
Retailer 19
-
$19,167 NZD
€10,288 EUR
View
B+
Retailer 20
-
$19,180 NZD
$10,810 USD
View
B+
Retailer 21
-
$19,467 NZD
$10,971 USD
View
Retailer 22
-
$20,032 NZD
$11,290 USD
View
Price last confirmed 56 days ago
B+
Retailer 23
-
$20,032 NZD
$11,290 USD
View
B
Retailer 24
-
$23,543 NZD
ZAR 214,361 ZAR
View
B
Retailer 25
-
$25,028 NZD
£11,107 GBP
View
Retailer 26
-
$26,709 NZD
$15,053 USD
View
Price last confirmed 52 days ago
Most Expensive
B
NZ Jewellers
37a199b9-87a9-47ef-83b8-89bff342d19c · Oct 30
$26,709 NZD
$15,053 USD
View
26 more retailers have this diamond
Prices start from $14,558 NZDSave up to $12,150 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
$14,558 NZD