Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1543994919

Certificate GIA 1543994919

Diamond specifications and retailer prices

From $13,068 NZD
$7,365 USD
As of October 29, 2026
Save $11,082 NZD (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $29,909 NZD at NZ Jewellers · As of September 28, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1543994919. Listed at 19 retailers as of October 29, 2026, with a 85% 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1543994919
Dimensions7.28 × 7.31 × 4.57 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.28 mm7.31 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1543994919
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.7%

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: Oct 29
Current: $13,710 NZD|Low: $11,863 NZD|High: $24,278 NZD|Avg: $16,425 NZD|+15.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 15$13,068 NZD
Retailer 4$13,495 NZD
Retailer 1$13,710 NZD
Retailer 16$13,880 NZD
Retailer 3$14,345 NZD
Retailer 5$14,413 NZD
Retailer 2$15,361 NZD
Retailer 7$15,878 NZD
Retailer 12$15,923 NZD
Retailer 9$15,984 NZD
Retailer 10$15,994 NZD
Retailer 6$16,130 NZD
Retailer 14$17,467 NZD
Retailer 8$19,208 NZD
Retailer 13$20,800 NZD
Retailer 11$24,149 NZD

34 data points across 16 retailers

19 retailers$13,068 NZD to $24,149 NZD

A
Cheapest Retailer
-
$13,068 NZD
$7,365 USD
A
Retailer 2
-
$13,495 NZD
$7,606 USD
View
A
Retailer 3
-
$13,710 NZD
$7,727 USD
View
A
Retailer 4
-
$13,880 NZD
$7,823 USD
View
A
Retailer 5
-
$14,345 NZD
$8,085 USD
View
B+
Retailer 6
-
$14,413 NZD
$8,123 USD
View
Final sale: no returns
B+
Retailer 7
-
$15,361 NZD
$8,657 USD
View
Retailer 8
-
$15,878 NZD
$8,949 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$15,923 NZD
A$13,807 AUD
View
B+
Retailer 10
-
$15,984 NZD
£7,093 GBP
View
B+
Retailer 11
-
$15,994 NZD
$9,014 USD
View
B+
Retailer 12
-
$16,130 NZD
$9,091 USD
View
Retailer 13
-
$16,201 NZD
$9,131 USD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
$17,467 NZD
$9,845 USD
View
Retailer 15
-
$18,694 NZD
$10,536 USD
View
Price last confirmed 60 days ago
Retailer 16
-
$18,694 NZD
$10,536 USD
View
Price last confirmed 32 days ago
Retailer 17
-
$20,800 NZD
ZAR 189,383 ZAR
View
Price last confirmed 8 days ago
B
Retailer 18
-
$24,149 NZD
£10,717 GBP
View
Most Expensive
NZ Jewellers
5239c466-c2e3-4e18-a2db-1163951c3b6d · Sep 28
$29,909 NZD
$16,857 USD
View
Price last confirmed 32 days ago
18 more retailers have this diamond
Prices start from $13,068 NZDSave up to $11,082 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
$13,068 NZD