Round|Natural|GIA

1.60ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2507839323

Certificate GIA 2507839323

Diamond specifications and retailer prices

From $10,886 NZD
$6,125 USD
As of November 1, 2026
Save $8,548 NZD (44%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $23,324 NZD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.6ct natural round diamond

This 1.6ct 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 2507839323. Listed at 18 retailers as of November 1, 2026, with a 79% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.60
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2507839323
Dimensions7.46 × 7.41 × 4.60 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.46 mm7.41 mm1.60 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2507839323
Side View
Table 59.0%Crown 36°Girdle: ThickPavilion 40.6°Culet: NoneDepth 61.8%

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: $23,324 NZD|Low: $9,718 NZD|High: $23,324 NZD|Avg: $14,850 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
November 2, 2026
Retailer 3$10,886 NZD
Retailer 4$11,661 NZD
Retailer 5$11,695 NZD
Retailer 6$12,633 NZD
Retailer 9$13,058 NZD
Retailer 14$13,445 NZD
Retailer 11$13,987 NZD
Retailer 12$13,987 NZD
Retailer 2$14,342 NZD
Retailer 13$14,449 NZD
Retailer 7$15,170 NZD
Retailer 10$17,133 NZD
Retailer 8$19,434 NZD
NZ Jewellers$23,324 NZD

38 data points across 14 retailers

18 retailers$10,886 NZD to $19,434 NZD

B+
Cheapest Retailer
-
$10,886 NZD
$6,125 USD
B+
Retailer 2
-
$11,017 NZD
$6,199 USD
View
Retailer 3
-
$11,661 NZD
$6,561 USD
View
Price last confirmed 17 days ago
B+
Retailer 4
-
$11,695 NZD
$6,580 USD
View
Retailer 5
-
$12,633 NZD
$7,108 USD
View
Price last confirmed 13 days ago
Retailer 6
-
$12,829 NZD
$7,218 USD
View
Price last confirmed 17 days ago
B+
Retailer 7
-
$13,058 NZD
£5,785 GBP
View
Retailer 8
-
$13,445 NZD
A$11,638 AUD
View
Price last confirmed 11 days ago
B
Retailer 9
-
$13,987 NZD
$7,870 USD
View
B
Retailer 10
-
$13,987 NZD
$7,870 USD
View
B+
Retailer 11
-
$14,342 NZD
£6,354 GBP
View
B+
Retailer 12
-
$14,449 NZD
$8,130 USD
View
Retailer 13
-
$14,577 NZD
$8,202 USD
View
Price last confirmed 12 days ago
B
Retailer 14
-
$15,170 NZD
€8,129 EUR
View
Retailer 15
-
$15,363 NZD
$8,644 USD
View
Price last confirmed 18 days ago
B
Retailer 16
-
$17,133 NZD
ZAR 155,738 ZAR
View
B
Retailer 17
-
$19,434 NZD
£8,610 GBP
View
Most Expensive
NZ Jewellers
718acebf-4c80-42b3-a339-20d5808f87ce · Oct 20
$23,324 NZD
$13,123 USD
View
Price last confirmed 12 days ago
17 more retailers have this diamond
Prices start from $10,886 NZDSave up to $8,548 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+
1.60ct Round
$10,886 NZD