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Round|Natural|GIA

1.33ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1509484256

Certificate GIA 1509484256

Diamond specifications and retailer prices

From $3,478 USD
As of October 30, 2026
Save $4,708 USD (58%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,186 USD at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.33ct natural round diamond

This 1.33ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1509484256. Listed at 11 retailers as of October 30, 2026, with prices from $3,478 to $8,186, a $4,708 spread on the same certified stone. Diamond Quarter lists it at $8,186. 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

1.33
Carat
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1509484256
Dimensions7.04 × 7.00 × 4.37 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Cloud, Crystal
Top View
7.04 mm7.00 mm1.33 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1509484256
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.3%

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 30
Current: $4,516 USD|Low: $3,470 USD|High: $6,145 USD|Avg: $4,477 USD|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$3,470 USD
Retailer 8$3,478 USD
Retailer 6$4,100 USD
Retailer 3$4,435 USD
Retailer 2$4,460 USD
Retailer 9$4,460 USD
Retailer 1$4,516 USD
Retailer 10$4,610 USD
Retailer 4$4,915 USD
Retailer 7$6,145 USD

43 data points across 10 retailers

11 retailers$3,478 USD to $8,186 USD

Retailer 1
-
$3,470 USD
Price last confirmed 10 days ago
A
Retailer 2
-
$3,478 USD
View
B+
Retailer 3
-
$4,100 USD
A$6,308 AUD
View
B+
Retailer 4
-
$4,435 USD
£3,492 GBP
View
B+
Retailer 5
-
$4,460 USD
View
B+
Retailer 6
-
$4,460 USD
View
B+
Retailer 7
-
$4,516 USD
€4,301 EUR
View
B+
Retailer 8
-
$4,610 USD
View
B
Retailer 9
-
$4,915 USD
£3,870 GBP
View
B
Retailer 10
-
$6,145 USD
View
Most Expensive
B
Diamond Quarter
1.33SI2H1556F092N · Oct 31
$8,186 USD
£6,446 GBP
View
10 more retailers have this diamond
Prices start from $3,478 USDSave up to $4,708 USD

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
1.33ct Round
$3,478 USD