Round|Natural|GIA

1.23ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2557335290

Certificate GIA 2557335290

Diamond specifications and retailer prices

From $4,148 USD
As of November 4, 2026
Save $3,253 USD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,401 USD at Wholesale Diamonds Direct · As of November 4, 2026
View at Wholesale Diamonds Direct

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557335290. Listed at 14 retailers as of November 4, 2026, with prices from $4,148 to $7,401, a $3,253 spread on the same certified stone. Wholesale Diamonds Direct lists it at $7,401. 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

1.23
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2557335290
Dimensions6.83 × 6.86 × 4.24 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
6.83 mm6.86 mm1.23 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557335290
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.0%

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 4
Current: $6,406 USD|Low: $4,490 USD|High: $6,453 USD|Avg: $5,312 USD|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 6$4,490 USD
Retailer 7$4,893 USD
Retailer 5$5,034 USD
Retailer 4$5,156 USD
Retailer 3$5,410 USD
Retailer 2$5,753 USD
Retailer 1$6,406 USD

42 data points across 7 retailers

14 retailers$4,148 USD to $7,401 USD

B+
Cheapest Retailer
-
$4,148 USD
B+
Retailer 2
-
$4,490 USD
View
B+
Retailer 3
-
$4,893 USD
View
B
Retailer 4
-
$5,016 USD
View
B
Retailer 5
-
$5,034 USD
View
B+
Retailer 6
-
$5,156 USD
View
B
Retailer 7
-
$5,340 USD
View
B
Retailer 8
-
$5,340 USD
View
B
Retailer 9
-
$5,394 USD
View
B
Retailer 10
-
$5,410 USD
View
B
Retailer 11
-
$5,520 USD
View
B
Retailer 12
-
$5,753 USD
View
B
Retailer 13
-
$6,406 USD
View
Most Expensive
B
Wholesale Diamonds Direct
246422210 · Nov 4
$7,401 USD
View
13 more retailers have this diamond
Prices start from $4,148 USDSave up to $3,253 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+
1.23ct Round
$4,148 USD