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Round|Lab Grown|IGI

1.21ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG836617703

Shape and cutting style on the report: Round brilliant

Certificate IGI LG836617703

Diamond specifications and retailer prices

From $258 USD
As of October 29, 2026
Save $1,973 USD (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,231 USD at Helzberg Diamonds · As of October 29, 2026
View at Helzberg Diamonds

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836617703 or 836617703. Listed at 22 retailers as of October 29, 2026, with prices from $258 to $2,231, a $1,973 spread on the same certified stone. Helzberg Diamonds lists it at $2,231. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836617703
Dimensions6.77 × 6.83 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.77 mm6.83 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836617703
Side View
Table 58.0%Crown 35.6°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $2,231 USD|Low: $256 USD|High: $2,231 USD|Avg: $826 USD
Helzberg Diamonds
Retailer 2
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Retailer 22
October 29, 2026
Retailer 10$258 USD
Retailer 11$289 USD
Retailer 5$299 USD
Retailer 6$320 USD
Retailer 14$320 USD
Retailer 18$480 USD
Retailer 16$511 USD
Retailer 13$533 USD
Retailer 7$535 USD
Retailer 17$550 USD
Retailer 8$571 USD
Retailer 2$608 USD
Retailer 9$713 USD
Retailer 4$983 USD
Retailer 15$1,029 USD
Retailer 21$1,040 USD
Retailer 12$1,080 USD
Retailer 20$1,134 USD
Retailer 19$1,285 USD
Retailer 3$1,510 USD
Retailer 22$1,780 USD
Helzberg Diamonds$2,231 USD

23 data points across 22 retailers

22 retailers$258 USD to $2,231 USD

A
Cheapest Retailer
-
$258 USD
A
Retailer 2
-
$289 USD
View
Final sale: no returns
A
Retailer 3
-
$299 USD
View
A
Retailer 4
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$320 USD
View
A
Retailer 5
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$320 USD
View
A
Retailer 6
-
$480 USD
View
A
Retailer 7
-
$511 USD
£402 GBP
View
A
Retailer 8
-
$533 USD
€508 EUR
View
A
Retailer 9
-
$535 USD
View
A
Retailer 10
-
$550 USD
ZAR 8,886 ZAR
View
A
Retailer 11
-
$571 USD
View
A
Retailer 12
-
$608 USD
£479 GBP
View
B+
Retailer 13
-
$713 USD
View
B+
Retailer 14
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$983 USD
View
B+
Retailer 15
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$1,029 USD
View
B+
Retailer 16
-
$1,040 USD
SGD 1,406 SGD
View
B+
Retailer 17
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$1,080 USD
View
B+
Retailer 18
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$1,134 USD
View
B+
Retailer 19
-
$1,285 USD
£1,012 GBP
View
B
Retailer 20
-
$1,510 USD
View
Price last confirmed 8 days ago
B
Retailer 21
-
$1,780 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOJMMHNNGJ · Oct 29
$2,231 USD
View
21 more retailers have this diamond
Prices start from $258 USDSave up to $1,973 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
1.21ct Round
$258 USD