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Round|Natural|GIA

1.29ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 3555469223

Certificate GIA 3555469223

Diamond specifications and retailer prices

From $3,916 USD
As of October 30, 2026
Save $1,693 USD (30%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $5,609 USD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 1.29ct natural round diamond

This 1.29ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555469223. Listed at 5 retailers as of October 30, 2026, with prices from $3,916 to $5,609, a $1,693 spread on the same certified stone. 77 Diamonds lists it at $5,609. 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

1.29
Carat
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 3555469223
Dimensions6.98 × 7.02 × 4.30 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural, Natural
Top View
6.98 mm7.02 mm1.29 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3555469223
Side View
Table 58.0%Crown 34°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $5,609 USD|Low: $1,677 USD|High: $5,646 USD|Avg: $2,911 USD|+104.0%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 12$1,677 USD
Retailer 3$1,809 USD
Retailer 7$1,833 USD
Retailer 11$2,229 USD
Retailer 4$2,463 USD
Retailer 10$2,469 USD
Retailer 6$2,843 USD
Retailer 8$3,870 USD
Retailer 5$3,916 USD
Retailer 2$4,075 USD
Retailer 9$4,686 USD
77 Diamonds$5,609 USD

36 data points across 12 retailers

5 retailers$3,916 USD to $5,609 USD

Retailer 1
-
$2,796 USD
Price last confirmed 38 days ago
B+
Retailer 2
-
$3,916 USD
View
B+
Retailer 3
-
$4,075 USD
View
Retailer 4
-
$5,592 USD
View
Price last confirmed 41 days ago
Most Expensive
B
77 Diamonds
RBZDPUTZMZZ · Oct 30
$5,609 USD
£4,417 GBP
View
4 more retailers have this diamond
Prices start from $3,916 USDSave up to $1,693 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.

B+
1.29ct Round
$3,916 USD