Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

ID • F/SI1 • GIA 6531369634

Certificate GIA 6531369634

Diamond specifications and retailer prices

From $15,386 NZD
$8,657 USD
As of November 2, 2026
Save $12,400 NZD (45%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $27,786 NZD at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6531369634. Listed at 16 retailers as of November 2, 2026, with prices from $15,386 to $27,786, a $12,400 spread on the same certified stone. NZ Jewellers lists it at $27,786. 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
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6531369634
Dimensions9.60 × 6.16 × 3.93 mm
L/W Ratio1.56
Top View
9.60 mm6.16 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6531369634
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.7%

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 2
Current: $27,786 NZD|Low: $15,205 NZD|High: $27,786 NZD|Avg: $20,019 NZD
NZ Jewellers
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
November 3, 2026
Retailer 3$15,386 NZD
Retailer 12$16,520 NZD
Retailer 7$16,673 NZD
Retailer 14$16,811 NZD
Retailer 5$18,061 NZD
Retailer 2$18,068 NZD
Retailer 15$18,146 NZD
Retailer 8$18,340 NZD
Retailer 10$18,652 NZD
Retailer 9$19,117 NZD
Retailer 6$20,841 NZD
Retailer 11$21,002 NZD
Retailer 13$24,493 NZD
Retailer 4$26,039 NZD
NZ Jewellers$27,786 NZD

40 data points across 15 retailers

16 retailers$15,386 NZD to $27,786 NZD

B+
Cheapest Retailer
-
$15,386 NZD
$8,657 USD
B+
Retailer 2
-
$15,610 NZD
$8,783 USD
View
B+
Retailer 3
-
$16,520 NZD
$9,295 USD
View
B+
Retailer 4
-
$16,811 NZD
$9,459 USD
View
B
Retailer 5
-
$17,779 NZD
$10,003 USD
View
B
Retailer 6
-
$18,061 NZD
$10,162 USD
View
B+
Retailer 7
-
$18,068 NZD
£8,005 GBP
View
Retailer 8
-
$18,146 NZD
A$15,707 AUD
View
Our latest check could not confirm this price
B
Retailer 9
-
$18,340 NZD
$10,319 USD
View
B
Retailer 10
-
$18,652 NZD
£8,264 GBP
View
B
Retailer 11
-
$19,117 NZD
$10,756 USD
View
B
Retailer 12
-
$20,841 NZD
$11,726 USD
View
B
Retailer 13
-
$21,002 NZD
€11,254 EUR
View
B
Retailer 14
-
$24,493 NZD
ZAR 222,636 ZAR
View
B
Retailer 15
-
$26,039 NZD
£11,536 GBP
View
Most Expensive
B
NZ Jewellers
ef70bf24-57fa-4a5e-9bde-f717cf668600 · Nov 2
$27,786 NZD
$15,634 USD
View
15 more retailers have this diamond
Prices start from $15,386 NZDSave up to $12,400 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 Oval
$15,386 NZD