Round|Natural|GIA

1.27ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 5553208216

Certificate GIA 5553208216

Diamond specifications and retailer prices

From $4,971 USD
CA$6,905 CAD
As of November 2, 2026
Save $1,447 USD (23%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $6,418 USD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 1.27ct natural round diamond

This 1.27ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5553208216. Listed at 3 retailers as of November 2, 2026, with prices from $4,971 to $6,418, a $1,447 spread on the same certified stone. 77 Diamonds lists it at $6,418. 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

1.27
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5553208216
Dimensions6.83 × 6.89 × 4.29 mm
L/W Ratio1.01
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.83 mm6.89 mm1.27 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5553208216
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.5%

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 2
Current: $6,418 USD|Low: $3,008 USD|High: $8,180 USD|Avg: $6,085 USD|+4.6%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 11$3,008 USD
Retailer 3$3,657 USD
Retailer 4$4,971 USD
Retailer 5$6,240 USD
Retailer 7$6,240 USD
Retailer 8$6,327 USD
Retailer 2$6,399 USD
77 Diamonds$6,418 USD
Retailer 6$7,920 USD
Retailer 10$7,920 USD
Retailer 9$8,180 USD

37 data points across 11 retailers

3 retailers$4,971 USD to $6,418 USD

B+
Cheapest Retailer
-
$4,971 USD
CA$6,905 CAD
B
Retailer 2
-
$6,399 USD
€6,094 EUR
View
Most Expensive
B
77 Diamonds
RBMBA8APGGYE · Nov 2
$6,418 USD
£5,054 GBP
View
2 more retailers have this diamond
Prices start from $4,971 USDSave up to $1,447 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+
1.27ct Round
$4,971 USD