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Round|Natural|GIA

1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 7553158400

Certificate GIA 7553158400

Diamond specifications and retailer prices

From $13,077 NZD
$7,358 USD
As of November 1, 2026
Save $15,772 NZD (55%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $28,849 NZD at NZ Jewellers · As of November 2, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7553158400. Listed at 24 retailers as of November 1, 2026, with prices from $13,077 to $28,849, a $15,772 spread on the same certified stone. NZ Jewellers lists it at $28,849. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7553158400
Dimensions7.31 × 7.28 × 4.56 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
7.31 mm7.28 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7553158400
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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 1
Current: $28,849 NZD|Low: $12,578 NZD|High: $28,849 NZD|Avg: $18,304 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8$13,836 NZD
Retailer 3$14,425 NZD
Retailer 10$15,626 NZD
Retailer 2$15,864 NZD
Retailer 9$15,866 NZD
Retailer 7$15,935 NZD
Retailer 4$17,848 NZD
Retailer 11$18,031 NZD
Retailer 6$21,191 NZD
Retailer 5$24,039 NZD
NZ Jewellers$28,849 NZD

43 data points across 11 retailers

24 retailers$13,077 NZD to $28,849 NZD

B+
Cheapest Retailer
-
$13,077 NZD
$7,358 USD
B+
Retailer 2
-
$13,473 NZD
A$11,662 AUD
View
B+
Retailer 3
-
$13,506 NZD
$7,599 USD
View
B+
Retailer 4
-
$13,836 NZD
$7,785 USD
View
Final sale: no returns
B+
Retailer 5
-
$13,891 NZD
$7,816 USD
View
B+
Retailer 6
-
$14,175 NZD
CA$11,077 CAD
View
B+
Retailer 7
-
$14,352 NZD
$8,075 USD
View
B+
Retailer 8
-
$14,425 NZD
$8,116 USD
View
B+
Retailer 9
-
$15,626 NZD
$8,792 USD
View
B+
Retailer 10
-
$15,864 NZD
£7,028 GBP
View
B
Retailer 11
-
$15,866 NZD
$8,927 USD
View
Retailer 12
-
$15,935 NZD
A$13,794 AUD
View
Price last confirmed 9 days ago
B
Retailer 13
-
$16,006 NZD
$9,006 USD
View
B+
Retailer 14
-
$16,577 NZD
$9,327 USD
View
B+
Retailer 15
-
$17,098 NZD
$9,620 USD
View
B+
Retailer 16
-
$17,098 NZD
$9,620 USD
View
B
Retailer 17
-
$17,666 NZD
$9,940 USD
View
B+
Retailer 18
-
$17,848 NZD
€9,564 EUR
View
B
Retailer 19
-
$18,031 NZD
$10,145 USD
View
B
Retailer 20
-
$18,406 NZD
$10,356 USD
View
Retailer 21
-
$18,990 NZD
$10,685 USD
View
Price last confirmed 10 days ago
B
Retailer 22
-
$21,191 NZD
ZAR 192,615 ZAR
View
B
Retailer 23
-
$24,039 NZD
£10,650 GBP
View
Most Expensive
B
NZ Jewellers
eb3c1a88-f45c-4c03-a97a-4d4757043811 · Nov 2
$28,849 NZD
$16,232 USD
View
23 more retailers have this diamond
Prices start from $13,077 NZDSave up to $15,772 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
$13,077 NZD