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Round|Natural|GIA

1.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 5426823638

Certificate GIA 5426823638

Diamond specifications and retailer prices

From $4,750 NZD
$2,677 USD
As of October 31, 2026
Save $14,426 NZD (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $19,176 NZD at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5426823638. Listed at 9 retailers as of October 26, 2026, with prices from $4,750 to $19,176, a $14,426 spread on the same certified stone. Wholesale Diamonds Direct lists it at $19,176. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5426823638
Dimensions7.31 × 7.27 × 4.55 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.31 mm7.27 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5426823638
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.4%

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 31
Current: $9,929 NZD|Low: $4,750 NZD|High: $19,176 NZD|Avg: $11,269 NZD|-2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Wholesale Diamonds Direct
October 23, 2026
Retailer 6$4,750 NZD
Retailer 5$4,933 NZD
Retailer 8$8,870 NZD
Retailer 3$9,149 NZD
Retailer 4$9,175 NZD
Retailer 1$9,929 NZD
Retailer 2$11,327 NZD
Retailer 7$12,039 NZD
Retailer 12$12,672 NZD
Retailer 10$12,881 NZD
Retailer 11$12,881 NZD
Retailer 9$13,307 NZD
Wholesale Diamonds Direct$19,176 NZD

9 data points across 13 retailers

9 retailers$4,750 NZD to $19,176 NZD

A
Cheapest Retailer
-
$4,750 NZD
$2,677 USD
A
Retailer 2
-
$4,933 NZD
$2,780 USD
View
Retailer 3
-
$8,870 NZD
$4,999 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$9,929 NZD
$5,596 USD
View
B+
Retailer 5
-
$12,039 NZD
$6,785 USD
View
B
Retailer 6
-
$12,881 NZD
$7,260 USD
View
B
Retailer 7
-
$12,881 NZD
$7,260 USD
View
B
Retailer 8
-
$13,307 NZD
$7,500 USD
View
Most Expensive
B
Wholesale Diamonds Direct
581904020 · Oct 26
$19,176 NZD
$10,808 USD
View
8 more retailers have this diamond
Prices start from $4,750 NZDSave up to $14,426 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
1.50ct Round
$4,750 NZD