Round|Natural|GIA

1.30ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6542878509

Certificate GIA 6542878509

Diamond specifications and retailer prices

From $7,793 NZD
As of November 5, 2026
Save $6,128 NZD (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $15,400 NZD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6542878509. Listed at 10 retailers as of November 2, 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

1.30
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6542878509
Dimensions6.90 × 6.95 × 4.33 mm
L/W Ratio1.01
Top View
6.90 mm6.95 mm1.30 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6542878509
Side View
Table 58.0%Crown 36°GirdlePavilion 40.8°CuletDepth 62.5%

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 5
Current: $7,793 NZD|Low: $7,771 NZD|High: $14,247 NZD|Avg: $9,699 NZD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 1$7,793 NZD
Retailer 2$8,361 NZD
Retailer 3$8,408 NZD
Retailer 5$8,814 NZD
Retailer 4$13,921 NZD

43 data points across 5 retailers

10 retailers$7,793 NZD to $13,921 NZD

A
Cheapest Retailer
-
$7,793 NZD
A
Retailer 2
-
$8,361 NZD
View
A
Retailer 3
-
$8,408 NZD
View
Retailer 4
-
$8,744 NZD
View
Price last confirmed 29 days ago
Retailer 5
-
$8,744 NZD
View
Price last confirmed 38 days ago
Retailer 6
-
$8,814 NZD
View
Price last confirmed 28 days ago
Retailer 7
-
$8,839 NZD
View
Price last confirmed 41 days ago
B
Retailer 8
-
$13,921 NZD
View
Retailer 9
-
$15,234 NZD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
ac875d9b-e803-49d7-b842-a9539e9bc1ae · Sep 28
$15,400 NZD
$8,537 USD
View
Price last confirmed 39 days ago
9 more retailers have this diamond
Prices start from $7,793 NZDSave up to $6,128 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
1.30ct Round
$7,793 NZD