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Round|Natural|GIA

1.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6233939765

Certificate GIA 6233939765

Diamond specifications and retailer prices

From $10,510 NZD
As of November 6, 2026
Save $13,140 NZD (56%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $23,649 NZD at NZ Jewellers · As of November 7, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6233939765. Listed at 30 retailers as of November 6, 2026, with prices from $10,510 to $23,649, a $13,140 spread on the same certified stone. NZ Jewellers lists it at $23,649. 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

1.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6233939765
Dimensions7.22 × 7.28 × 4.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.22 mm7.28 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6233939765
Side View
Table 61.0%Crown 35.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.7%

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 6
Current: $14,512 NZD|Low: $10,510 NZD|High: $19,809 NZD|Avg: $14,361 NZD|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 4$10,510 NZD
Retailer 3$11,282 NZD
Retailer 11$12,584 NZD
Retailer 10$13,109 NZD
Retailer 8$13,592 NZD
Retailer 2$13,632 NZD
Retailer 1$14,512 NZD
Retailer 5$14,557 NZD
Retailer 7$15,017 NZD
Retailer 12$17,251 NZD
Retailer 6$17,262 NZD
Retailer 9$19,598 NZD

44 data points across 12 retailers

30 retailers$10,510 NZD to $23,649 NZD

B+
Cheapest Retailer
-
$10,510 NZD
B+
Retailer 2
-
$10,672 NZD
View
B+
Retailer 3
-
$11,170 NZD
View
B+
Retailer 4
-
$11,282 NZD
View
Final sale: no returns
B+
Retailer 5
-
$11,325 NZD
View
B+
Retailer 6
-
$11,743 NZD
View
B+
Retailer 7
-
$11,825 NZD
View
B+
Retailer 8
-
$11,861 NZD
View
B+
Retailer 9
-
$12,584 NZD
View
B+
Retailer 10
-
$12,589 NZD
View
B
Retailer 11
-
$12,809 NZD
View
B
Retailer 12
-
$13,051 NZD
View
B+
Retailer 13
-
$13,109 NZD
View
B
Retailer 14
-
$13,517 NZD
View
B
Retailer 15
-
$13,592 NZD
View
Retailer 16
-
$13,632 NZD
View
Price last confirmed 16 days ago
B
Retailer 17
-
$14,179 NZD
View
B
Retailer 18
-
$14,179 NZD
View
B
Retailer 19
-
$14,253 NZD
View
B+
Retailer 20
-
$14,512 NZD
View
B+
Retailer 21
-
$14,557 NZD
View
B
Retailer 22
-
$14,648 NZD
View
B
Retailer 23
-
$14,779 NZD
View
B
Retailer 24
-
$15,017 NZD
View
B
Retailer 25
-
$15,568 NZD
View
Retailer 26
-
$15,578 NZD
View
Price last confirmed 15 days ago
B
Retailer 27
-
$17,251 NZD
View
B
Retailer 28
-
$17,262 NZD
View
B
Retailer 29
-
$19,598 NZD
View
Most Expensive
B
NZ Jewellers
88894d16-2cac-4304-82c2-a7849fbcd248 · Nov 7
$23,649 NZD
$13,110 USD
View
29 more retailers have this diamond
Prices start from $10,510 NZDSave up to $13,140 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+
1.50ct Round
$10,510 NZD