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Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 1548486476

Certificate GIA 1548486476

Diamond specifications and retailer prices

From $8,354 NZD
₹448,408 INR
As of November 1, 2026
Save $2,251 NZD (21%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $10,605 NZD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1548486476. Listed at 7 retailers as of October 31, 2026, with prices from $8,354 to $10,605, a $2,251 spread on the same certified stone. Blue Nile lists it at $10,605. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1548486476
Dimensions9.07 × 6.46 × 4.09 mm
L/W Ratio1.40
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
9.07 mm6.46 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1548486476
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.4%

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: Nov 1
Current: $10,605 NZD|Low: $8,165 NZD|High: $11,730 NZD|Avg: $9,366 NZD|-9.6%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 2$8,354 NZD
Retailer 4$8,561 NZD
Retailer 7$8,987 NZD
Retailer 6$9,285 NZD
Retailer 3$9,518 NZD
Retailer 5$9,632 NZD
Blue Nile$10,605 NZD

39 data points across 7 retailers

7 retailers$8,354 NZD to $10,605 NZD

A
Cheapest Retailer
-
$8,354 NZD
₹448,408 INR
A
Retailer 2
-
$8,561 NZD
$4,825 USD
View
A
Retailer 3
-
$8,987 NZD
$5,065 USD
View
A
Retailer 4
-
$9,285 NZD
$5,233 USD
View
Final sale: no returns
A
Retailer 5
-
$9,518 NZD
£4,224 GBP
View
B+
Retailer 6
-
$9,632 NZD
SGD 7,336 SGD
View
Most Expensive
B+
Blue Nile
27966075 · Oct 31
$10,605 NZD
$5,977 USD
View
6 more retailers have this diamond
Prices start from $8,354 NZDSave up to $2,251 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 Oval
$8,354 NZD