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Round|Lab Grown|IGI

6.18ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG773639253

Shape and cutting style on the report: Round brilliant

Certificate IGI LG773639253

Diamond specifications and retailer prices

From $11,575 USD
As of October 29, 2026
Save $40,285 USD (78%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $51,860 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 6.18ct lab-grown round diamond

This 6.18ct lab-grown round sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG773639253 or 773639253. Listed at 24 retailers as of October 29, 2026, with prices from $11,575 to $51,860, a $40,285 spread on the same certified stone. Do Amore Diamonds lists it at $51,860. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

6.18
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG773639253
Dimensions11.70 × 11.72 × 7.31 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
11.70 mm11.72 mm6.18 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG773639253
Side View
Table 57.0%Crown 35.2°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.4%

Caratlytics Score

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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: $17,260 USD|Low: $11,112 USD|High: $39,898 USD|Avg: $19,977 USD|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 16$11,575 USD
Retailer 5$12,038 USD
Retailer 14$12,410 USD
Retailer 8$12,964 USD
Retailer 2$13,427 USD
Retailer 12$13,430 USD
Retailer 6$13,890 USD
Retailer 15$14,246 USD
Retailer 1$17,260 USD
Retailer 10$21,810 USD
Retailer 11$23,785 USD
Retailer 13$27,958 USD
Retailer 9$28,680 USD
Retailer 3$30,080 USD
Retailer 7$30,080 USD
Retailer 4$34,434 USD

44 data points across 16 retailers

24 retailers$11,575 USD to $51,860 USD

A
Cheapest Retailer
-
$11,575 USD
A
Retailer 2
-
$12,038 USD
View
Retailer 3
-
$12,410 USD
View
Price last confirmed 14 days ago
A
Retailer 4
-
$12,964 USD
View
Final sale: no returns
A
Retailer 5
-
$13,427 USD
View
Retailer 6
-
$13,427 USD
View
Price last confirmed 15 days ago
A
Retailer 7
-
$13,430 USD
View
A
Retailer 8
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$13,684 USD
View
A
Retailer 9
-
$13,890 USD
View
A
Retailer 10
-
$14,246 USD
View
A
Retailer 11
-
$14,879 USD
View
A
Retailer 12
-
$17,260 USD
£13,590 GBP
View
B+
Retailer 13
-
$21,810 USD
£17,173 GBP
View
B+
Retailer 14
-
$23,785 USD
€22,652 EUR
View
Retailer 15
-
$27,958 USD
A$43,012 AUD
View
Price last confirmed 9 days ago
B+
Retailer 16
-
$28,680 USD
ZAR 463,322 ZAR
View
B+
Retailer 17
-
$30,080 USD
View
B+
Retailer 18
-
$30,080 USD
View
B+
Retailer 19
-
$34,434 USD
View
B
Retailer 20
-
$36,950 USD
View
B
Retailer 21
-
$39,898 USD
View
B
Retailer 22
-
$42,323 USD
View
Most Expensive
B
Do Amore Diamonds
27-15A20E95B · Oct 31
$51,860 USD
View
22 more retailers have this diamond
Prices start from $11,575 USDSave up to $40,285 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
6.18ct Round
$11,575 USD